Dude: "Hey who switched on me?"
Woman: "Oh, it was Oliver."
Dude: "Ugh, what a friggin' Jum Knucker."
Woman: "Oh, it was Oliver."
Dude: "Ugh, what a friggin' Jum Knucker."
by crayonpuff March 5, 2022

A derogatory term, akin to "gooner" or "beta", which insults a person based off the assumption they cum in jars. Can be used in multiple contexts such as a noun, verb, etc. (Jum, Jummed, Jumming)
by 16lol May 18, 2024

A person riding an electric scooter going into on coming traffic while jerking off.
Immense energetic outburts.
Immense energetic outburts.
“Omg I just spilt my Jum”
“YOU have just been JUMMED”
“I went to the doctor because I couldn’t Jum”
“I love a good Jum”
“I have never been able to Jum”
“YOU have just been JUMMED”
“I went to the doctor because I couldn’t Jum”
“I love a good Jum”
“I have never been able to Jum”
by Salusalusiva September 26, 2024

The word cum but with J instead of C. It is used to express a huge load seamen that can’t be expressed by just saying cum. Usually used in a sentence where other words start with J that arnt supposed to.
by Jummer boy March 9, 2022

Jum stands for justified unhinged moment. So like you did something unhinged but you slayed. Trisha paytas is jum. Iconic but unhinged.
by Random726363774 April 3, 2025
